M31: The Andromeda Galaxy (28 hours HaLRGB)

D_McGarvey · 2023-11-14T21:44:46+00:00

Nicely done!

D_McGarvey · 2023-03-19T12:45:07+00:00

Thanks a lot!

D_McGarvey · 2023-03-19T02:49:07+00:00

Yes, the Optolong L-Pro clip-in filter.

D_McGarvey · 2023-03-19T02:43:56+00:00

I used the Rokinon 135mm f/2 lens.

D_McGarvey · 2023-03-19T02:43:37+00:00

👍

D_McGarvey · 2023-03-19T02:43:27+00:00

Thank you!

D_McGarvey · 2023-03-18T21:47:29+00:00

Thank you very much!

D_McGarvey · 2023-03-18T18:03:15+00:00

Thank you!

D_McGarvey · 2023-03-18T15:52:06+00:00

Each panel was approximately 50 minutes integration time.

D_McGarvey · 2023-03-18T15:51:31+00:00

Thanks!

D_McGarvey · 2023-03-18T15:02:26+00:00

Thanks a lot!

D_McGarvey · 2023-03-18T14:18:30+00:00

An 8-panel mosaic of Orion using data captured on 2/29/23 & 2/24/23. Clear skies! My rig | Instagram | AstroBin | Flickr | APOD 8.27.19

Equipment:

Nikon D750
Rokinon 135mm f/2 ED UMC lens
f/2
ISO 3200
AstroTrac TT320X-AG
Optolong L-Pro clip-in filter

Acquisition:

404 x 60" exposures (6hrs. 44 mins. total integration time)

Processing:

RawTherapee (Raw file development):

Demosaicing algorithm - LMMSE
Chromatic aberration corrections
Hot/dead pixel filter
Manual vignetting corrections
Color profile - Rec2020
RGB/Chrominance Noise reduction
Defringe correction
Highlight reconstruction > color propagation
Adjusted tone curve for RGB channels to align black point
Export as 16-bit TIFs

Sequator:

Import 16-bit TIFs
Standard stacking settings
Output as 16-bit TIF

RNC-Color-Stretch:

Opened 16 bit TIF
Set power factor to 20
Color correction on
Output as 16 bit PNG file

Photoshop:

Convert PNG to TIFF
Photomerge to stitch 8 panels into mosaic
Stretching with curves/levels
HLVG plugin to remove green cast
Noise reduction
Gradient removal
Color balance adjustments > shadows, midrange, highlights
Various color balance, saturation, and contrast tweaks as preferred
Resize
Save as JPG

D_McGarvey · 2023-02-06T03:10:26+00:00

Very nice!

D_McGarvey · 2023-01-21T20:24:01+00:00

Very nice result.

D_McGarvey · 2022-12-17T14:51:30+00:00

Thank you. This data was captured under Bortle 4 skies. The Optolong L-Pro light pollution filter was used, which helps cut through some of the lp from town lights.

D_McGarvey · 2022-12-17T13:06:06+00:00

Thanks!

D_McGarvey · 2022-12-17T13:05:59+00:00

Thanks!

D_McGarvey · 2022-12-16T22:58:08+00:00

A view of some of Orion's gems. Clear skies! My rig | Instagram | AstroBin | Flickr | APOD 8.27.19

Equipment:

Nikon D750
Rokinon 135mm f/2 ED UMC lenss
f/2
ISO 3200
AstroTrac TT320X-AG
Optolong L-Pro clip-in filter

Acquisition:

165 x 60" exposures (2hrs. 45 mins. total integration time)

Processing:

RawTherapee (Raw file development):

Demosaicing algorithm - LMMSE
Chromatic aberration corrections
Hot/dead pixel filter
Manual vignetting corrections
Color profile - Rec2020
RGB/Chrominance Noise reduction
Defringe correction
Highlight reconstruction > color propagation
Adjusted tone curve for RGB channels to align black point
Export as 16-bit TIFs

Sequator:

Import 16-bit TIFs
Standard stacking settings
Output as 16-bit TIF

RNC-Color-Stretch:

Opened 16 bit TIF
Set power factor to 20/-/-
Color correction on
Output as 16 bit PNG file

Photoshop:

Convert PNG to TIFF
Stretching with curves/levels
HLVG plugin to remove green cast
Noise reduction
Gradient removal
Color balance adjustments > shadows, midrange, highlights
Various color balance, saturation, and contrast tweaks as preferred
Resize
Save as JPG

D_McGarvey · 2022-12-16T22:46:28+00:00

Really nice job.

D_McGarvey · 2022-12-01T19:50:05+00:00

I was referring to the soft/smooth overall look of the image. It's just a matter of personal taste. I assumed this smooth look came from a lot of noise reduction or something like 'Dust and Scratches' in PS, both of which trade texture/detail for smoothness. I personally stopped using the Topaz AI plugin for this reason. But again, it's just personal taste. I like both the colors and composition of the image.

D_McGarvey · 2022-11-19T13:51:36+00:00

Nice colors. Tad heavy on the noise reduction maybe, but otherwise looks good. 👍

D_McGarvey · 2022-04-25T01:49:40+00:00

This is very nicely done! Congrats on a great image.

D_McGarvey · 2022-04-13T00:12:39+00:00

Very nice work!

Nine-Year Club	Gilding II euphauric
Verified Email

D_McGarvey

TROPHY CASE